x^2=30-7x

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Solution for x^2=30-7x equation:


Simplifying
x2 = 30 + -7x

Solving
x2 = 30 + -7x

Solving for variable 'x'.

Reorder the terms:
-30 + 7x + x2 = 30 + -7x + -30 + 7x

Reorder the terms:
-30 + 7x + x2 = 30 + -30 + -7x + 7x

Combine like terms: 30 + -30 = 0
-30 + 7x + x2 = 0 + -7x + 7x
-30 + 7x + x2 = -7x + 7x

Combine like terms: -7x + 7x = 0
-30 + 7x + x2 = 0

Factor a trinomial.
(-10 + -1x)(3 + -1x) = 0

Subproblem 1

Set the factor '(-10 + -1x)' equal to zero and attempt to solve: Simplifying -10 + -1x = 0 Solving -10 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '10' to each side of the equation. -10 + 10 + -1x = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -1x = 0 + 10 -1x = 0 + 10 Combine like terms: 0 + 10 = 10 -1x = 10 Divide each side by '-1'. x = -10 Simplifying x = -10

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-10, 3}

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